Remove XIR files and clean up documentation

[Mandrenkov]

Context:
The XIR is now available on PyPI and is being actively maintained in a different repository.

After this PR is merged, Jet can be released on PyPI.

Description of the Change:

• Removed all XIR source files and tests (the former is now fetched from PyPI).
• Updated the XIR interpreter to use the latest version and conventions of the XIR.
• Created a standalone requirements.txt file as per the PyPA guidelines.
• Renamed get_xir_library() to get_xir_manifest() and added declarations for the supported outputs.
• Fixed a number of small issues including typos, missing hyperlinks, and outdated documentation.

Benefits:

• Jet is more streamlined and no longer contains any XIR implementation or tests.
• The high-level documentation is more current and consistent with other Xanadu repositories.

Possible Drawbacks:

• Some existing XIR scripts may no longer be interpretable by Jet since the previous revision of the XIR interpreter was based on an old version of the XIR.

Related GitHub Issues:
None.

[github-actions]

Test Report (C++) on Ubuntu

    1 files  ±0      1 suites  ±0   0s ⏱️ ±0s
524 tests ±0  524 ✔️ ±0  0 💤 ±0  0 ❌ ±0 
873 runs  ±0  873 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 9d2b62b. ± Comparison against base commit cb4ab41.

This pull request removes 318 and adds 318 tests. Note that renamed tests count towards both.

runner.global ‑ ContractTensors - c128_t/Contract T0(a) and T1(a,b) -> T2(b)
runner.global ‑ ContractTensors - c128_t/Contract T0(a,b) and T1(a,b) -> scalar
runner.global ‑ ContractTensors - c128_t/Contract T0(a,b) and T1(b) -> T2(a)
runner.global ‑ ContractTensors - c128_t/Contract T0(a,b,c) and T1(b,c,d) -> T2(a,d)
runner.global ‑ ContractTensors - c64_t/Contract T0(a) and T1(a,b) -> T2(b)
runner.global ‑ ContractTensors - c64_t/Contract T0(a,b) and T1(a,b) -> scalar
runner.global ‑ ContractTensors - c64_t/Contract T0(a,b) and T1(b) -> T2(a)
runner.global ‑ ContractTensors - c64_t/Contract T0(a,b,c) and T1(b,c,d) -> T2(a,d)
runner.global ‑ DefaultPermuter<>::Transpose Non power-of-2 data/{b,c,a} - > {a,b,c}
runner.global ‑ DefaultPermuter<>::Transpose Non power-of-2 data/{c,a,b} - > {a,b,c}
…

runner.global ‑ ContractTensors - c128_t/Contract T0(a) and T1(a,b) -> T2(b)
runner.global ‑ ContractTensors - c128_t/Contract T0(a,b) and T1(a,b) -> scalar
runner.global ‑ ContractTensors - c128_t/Contract T0(a,b) and T1(b) -> T2(a)
runner.global ‑ ContractTensors - c128_t/Contract T0(a,b,c) and T1(b,c,d) -> T2(a,d)
runner.global ‑ ContractTensors - c64_t/Contract T0(a) and T1(a,b) -> T2(b)
runner.global ‑ ContractTensors - c64_t/Contract T0(a,b) and T1(a,b) -> scalar
runner.global ‑ ContractTensors - c64_t/Contract T0(a,b) and T1(b) -> T2(a)
runner.global ‑ ContractTensors - c64_t/Contract T0(a,b,c) and T1(b,c,d) -> T2(a,d)
runner.global ‑ DefaultPermuter<>::Transpose Non power-of-2 data/{b,c,a} - > {a,b,c}
runner.global ‑ DefaultPermuter<>::Transpose Non power-of-2 data/{c,a,b} - > {a,b,c}
…

♻️ This comment has been updated with latest results.

[github-actions]

Test Report (Python) on Ubuntu

    1 files  ±    0      1 suites  ±0   5s ⏱️ -2s
300 tests  - 256  300 ✔️  - 256  0 💤 ±0  0 ❌ ±0 

Results for commit 9d2b62b. ± Comparison against base commit cb4ab41.

This pull request removes 556 and adds 300 tests. Note that renamed tests count towards both.

python.tests.jet.test_circuit ‑ test_wire_index
python.tests.jet.test_circuit.TestCircuit ‑ test_append_dangling_gate
python.tests.jet.test_circuit.TestCircuit ‑ test_append_dangling_state
python.tests.jet.test_circuit.TestCircuit ‑ test_append_one_wire_gate
python.tests.jet.test_circuit.TestCircuit ‑ test_append_one_wire_state
python.tests.jet.test_circuit.TestCircuit ‑ test_append_two_wire_gate
python.tests.jet.test_circuit.TestCircuit ‑ test_append_two_wire_state
python.tests.jet.test_circuit.TestCircuit ‑ test_constructor
python.tests.jet.test_circuit.TestCircuit ‑ test_indices
python.tests.jet.test_circuit.TestCircuit ‑ test_take_expected_value[Observables]
…

python.tests.test_circuit ‑ test_wire_index
python.tests.test_circuit.TestCircuit ‑ test_append_dangling_gate
python.tests.test_circuit.TestCircuit ‑ test_append_dangling_state
python.tests.test_circuit.TestCircuit ‑ test_append_one_wire_gate
python.tests.test_circuit.TestCircuit ‑ test_append_one_wire_state
python.tests.test_circuit.TestCircuit ‑ test_append_two_wire_gate
python.tests.test_circuit.TestCircuit ‑ test_append_two_wire_state
python.tests.test_circuit.TestCircuit ‑ test_constructor
python.tests.test_circuit.TestCircuit ‑ test_indices
python.tests.test_circuit.TestCircuit ‑ test_take_expected_value[Observables]
…

♻️ This comment has been updated with latest results.

[trbromley]

Thanks @Mandrenkov! I just had a few questions about the links in the readme

[thisac]

Great work @Mandrenkov! 💯 Nothing major blocking, will approve as soon as the comments from myself and Tom are addressed. 🙂

[thisac]

Looks great! 💯

[Mandrenkov]

Thanks, @thisac and @trbromley!